Beveling, grooving, and cutting tool



pll 14, 1931. I Q A CHAPMAN 1,800,338

BEVELING, GROOVING, AND CUTTING TOOL Filed July 7. 19304 2 SheetS--Shee'l l I April 14, 1931. CA CHAPMAN 1,800,338

BEVELING, GROOVING, AND CUTTING TOOL gwowntoz Patented Apr. 14, 1931 stares @Niiigill ear-sar Fries 'onnnrrs e.. crreriiiiiiv, or riiaiz, Vcoronario rinvenire-,snowing .fi-iin cnrrrive 'rooL 'Application filed July 7, i930'. n Serial ilo. 465,338.

generally made from sugar cane pulp, corn.

stalks or similar fibrous material, or which is made from wood pulp. rlhese fibrous boards Aarequite soft and can be readilyrcut and worked by means of dierent tools. When boards of the type referred to are used for finishing basement rooms, attics, and` in other places where a decorative effect is desired, itl

is customary to panel the boards by cutting grooves in theii surfaces or by beveling their edges so that when they .are assembled there will be V-shaped grooves in the line separating the adj acentboards or panels. lt is also often desirable to overlap the adjacent edges of the boardsin a manner known as shiplap joints where smooth surfaces are desired.

lt is the object oi' this invention to pro-` duce .a convenient and substantialtoolrthat can be used for cutting and for grooving fibrous boards of the type above rei'erred to and which can be easily 'set so as to accommodate diderent sizes of boards so as to make diiierent depths and widths of grooves.

rllhis invention, briefly desoribed,'consis ts of a frame having two parallel side members connected at their ends with transverse meinbers which serve to hold the side members Jin spaced relation. One of the side membersis preferablyadjustably secured te the ends of th-e transverse members so that its distance 40 from the other side member cany be varied to suit dierent conditions. rEhe two side inem'-` bers are provided with si'ipportingv lugs to which clamping members fare attached.v

rlhese clamping members' are provided with cutting blades and aredownwardly .and in- Vwardly inclinedand the blades areso -arranged that when the tool is drawn'longituv dinally the two blades will cut a ii-shaped groove in one side of the material. The tool ias also provided With'guides that direct its movement. for 'the purpose of making the grooves parallel with the edges of the board, Une of .these guide members is provided'with avcutting blade that is arranged to split the board inwardly from the edge and when this is employed, one or both of the inclined blades are. removed and anotherbladefattachedthatA y cutsl at right angles to the surface .of the Y board. Y Having thus briefly described the invention7 the same will now be describedin detail, andfor this-purpose reference/will vbe .had` tothe accompanyingdrawings in which the 'preferred embodiment of the invention has been shown, and in which;

v,Figi is atop plan view of the tool,show

ing thesame larranged for cutting a V-shaped Y groove 5 Fig. 2 is ra ,section taken onv line 2 2, Fig. l,l and shows the toolsin position for cutting a celoteit;y r- Y Fig-3 is al section taken on line 3'-3,' Fig. l and shows the manner in whichoneofthe y blade holding.clampsfissecured to one of the side 4members;

f Fig. /lis a view looking inthe direction of arrowlinFigB; Y M

Figo is a -view similar to that shown in Fig. l, but drawn to a larger scale and with parts brokenaway,.this viewshowsthe tool arranged forcutting a shiplap groove; K Fig. 6 is a section taken on line 6 6, Fig. 5; Fig.,7jis' a' view looking in the 'direction of arrow? `invFig 5, and Ashows a side .elevation of the vertical cutting tool; r Fig. ,Skis a view looking in the direction or" arrow 8, Fig. 5, a portion of the side member being broken away; f

V-shaped groove in a board of ieg are secured to the side members 1 and 2 in the manner shown in Fig. 1.v Member 2 has twoV brackets that are fheld in place by screws or rivets and have upwardly extending portions 11 that are perforated forthe reception of bars 9. Secured to the side member 1 .are lugs 12and 13'. rLug 12; has a` cylindrical portion that is providedlwith an openingfor the reception'of one end'of'one of the bars 9, andlug 13 has a simi-laricylindrical portion andis provided with an'op'en' ingfor lthe reception ot'the corresponding end of the 'other'bar9- Setscrews 14 are pro` vided for holdingthe bars lin place. The other end of lug 13 Vhas a semi-cylindrical portion 15that'isprovided on one sidewithV a-threadedopening for the lreception Aof thek screw 16. This screw is provided with an annular groove 17 on the inside ofthe head 18." Slidably secured to the outer ends of-bars '9* is a guide 19. This guide lhas two hub p0rti'ons 20 through which the bars 9 extendY y and these hub portions areprovided with set screws 217 by means ot' which the parts can be clamped in position. When the groove is to be cut some distance from the edge, the

guide 19 is employed alonerbut iiiftheV groove is to Vbe cut close to the edge it is necessary' to Vprovide an auxiliary guide bar 22,- which is secured to the bars 19 by means of spacing 'bars 23.' These'bars have reducedportions 24 that pass through openings in thel guide 1.9

and which have their kends .threaded for: the reception of clamping nuts 25.V The-guide bar 22 is vsoar'ljusted that'it will pass underneath the lower'surtace ofthe side member'v2 inthe manner shown inFig. 2 and the spacing Ybars 23` are-ofsuch lengththat it can be moved overto a positionadjacent the corner of the knife or cutter secu-red to bar 21, or any position-between this andthe outer edge vvofv sidemember2 and bythis means it is possible to cut'the grooveI anyy distanceK from the edge of the board 26.

For the purpose oi securingA the diagonal cutters 27 and`23in place, each isclamped between two bars '29 'and 30.` rlh'e bars 29 are provided at one end with note-hes 31 that extend inwardly Vand at the' other-end with notches 32'that eXtendinwardl. from one side; T he side members 1 and 2arepr'ovided with lugs 33 and 34 whose upper are' inclined inwardlyv and Vdownwardly as `indi-V cated by` referencenumeral 35 in- Fig.' 3.

Luge 34 are provided with stud 'bolts 3'13with which tliewing nuts 37 are connected, and

lugs 33 are provided with screws 38 that eir-A tend through the slot 31 in the manner shown in the drawing. T he lugs 33 and 34 may be secured to the side members in any suitable way, but have been shownv as held in place by means ol screws 39. By means of the clampingnuts 37 the `positionzof the cutting blades can be adjusted up or down seas to suits-nyparticular requirements. and can be clamped inadjusted position by the wing nuts in the manner shown. 1i it is desired to cut a ll-shaped groove` like that shown in A in Fig. 10, the parts are adjusted in the mannershown'in Figs.- 1 and 2. The blades 27 and 28 are so adjusted that each will extend through `the vplane e'i'fth-'e' otlrer'and"inV4 thi way the `trianguiaisection '40-v will-'be -fcomL pletely severed so asto "leavea" clean groove.

Vlt'it is desired tocut entirely through the" board soy `as to leavea-wallfatright'angles to- CIU the surface thereof, the two blades2'and23 together with theiifholders arev removed yand the cutter v'assembly shown put -into piace..` This assembly 'conslstsof a bai-41 that isA provided at; one en d with-an inwardlyex`A` tending notch 42 and has itsother end curved dow'iiwardlyA as indicated by reference' num-A eral 43i A Clamping pla-te 44 -is h by means oitwo screws 45 andservesto secu-re the cutting-lilac esV 46 andv to h'old`-it'against"' movement. VYOnthe side otmomber 41 opposite rointh'at to which lthe plateisconnected, a plate '47 is located. f Thisplate hasanopen-` ing'48 lextending downward-'ly lfrom 'the `up- Per Aend thereof andis securetfto Imem'beril by means of a clampinigscrew 49lthat passes through va' slot" 5G' iin 'the horizontal f portion 51.' Member V'41 has a threaded open-ing for the reception oit' a screw 52 whichextends through theopening '43 and `vserves to hold the cutter assembly in` place. By means of yscrew` 52, the depth to-'which't'he blade 46 can eX; f tendfinto the 'board can "bey regulated. lie-V vertical cutter lcan bev used in conibinatien with either one-oi"bladesv 2? ori'23and in this case a `groove like thatshown'in D; Fig:

10, is cut. i The sideV on which the 'inclineis located is determined by whi ch' onefof :the

y eutters27 or 28 is lett in place.' lV-lierea'shinlap: joint like that shown in-C Fig.. '10," is

desired, guidegbar53 issecuredito theguide bar in place Voi bar'221; This baris'lield.` in `place by similaraneanscomprising short laterally extending bars 23d that" are provided attheir outer ends 'with' wing'nuts 250;. Bar 53 isprovided near its centerfportion with a `notch Aor cut-out portion 54, within which aclamping plate is located*Y This plate is held in place by; means of screws 56 and serves to holdfthe cutting blade securely' in place. lVhenl 'the' -par'ts are adjusted asy shownin Figs'. 5 'and f6,I a piece 5890i" rectangular cross sect-ionis removed; leaving afnotch';

next board iscutin the saine manner,V thetw'o Y prislng,

lt will be seenfrom the above description when read in connection with the drawings that I have produced a simple tool of sub-l stantial construction that is so made that different cutter knives can be applied to it in such a manner that grooves of different shapes can be cut at any distance from the edges of the board and which is therefore of great usefulness in preparing celoteX and similar fibrous boards when it is desirable to give the wall surfaces a nished appearance.

ln Fig. 8 it will be seen that the guide bar 53 is provided at each end with a removable member 59 whose upper end is provided with an inwardly extending lug 60 that overlaps the outer end of side member 2, and which therefore serves to connect they guide to member 2 in such a position that it cannot move downwardly, and therefore the knife 57 will be guided in a straight line during the movement of the tool. l' also wish to call attention to the fact that the blades are beveled on one side only and this helps to hold them steady during the cutting operation. The width of the groove that can be cut is controlled by moving the bars land 2 farther away from or closer to each other and this is accomplished by loosening the clamping bolts 7 and moving bar 2 either towards or away from bar l, after which bolts 7 are tightened and holds the two side members in adjusted position.

When the tool is not in use, it can be disassembled by removing the guides from each other and from the bars 9 and removing the bars 9 from, the main body of the tool. The different cutters and cutter clamping devices,

' can also be removed and placed in separate compartments in a carrying case specially designed for this purpose.

Having described the invention what is claimed as new is:

l. A tool for the purpose described, coma frame having two side members, means for holding them `in spaced parallel relation, a blade carried by the frame and extending below the under surface thereof, a second blade carried by the frame, the planes of the two blades intersecting each other in a line parallel with the axis of frame, and a guide bar adj ustably secured to the frame.

2. A tool for the purpose described, comprising', a frame having two side members, means for holding them in spaced parallel relation, a blade secured to the inner edge of each side member, the blades being downwardly and inwardly inclined, the planes of the blades intersecting each other ina line parallel with the side members, the lowermost point of the cutting edge of each blade being below the plane of the other blade whereby intersecting cuts are formed, and a guide bar attached to the frame.'

3. A tool-forv the purpose described, comprising, a frame having two side members, means for holding them inV spaced parallel relation', a blade secured to the inner edge of each side member, the blades being downwardly and inwardly inclined', the planes of ythe blades intersecting each other in a Vline parallel with the side members, the lowermost point of the cutting edge of each blade being below the plane of the other blade whereby intersecting cuts are formed, a guide bar attached to the frame, and means .for adjusting the distance between the side members. e

4l. A toolfor the purpose described, com-` prising, a frame having two side members, means for holding them in spaced parallel relation, a' blade secured to the inner edge of each side member, the blades being downwardly and inwardly inclined, the planes of theblades intersecting eachother in a line parallel with the side members, the lowermost point of the cutting edge of each blade being below the` plane of the other blade whereby intersecting cuts are formed, a'guide bar attached to the frame, means for adjustingk the distance'between thek side members Y' and means for adjusting the guide bar with p respect to the frame. f

5. A tool for the purpose described, comprising, a frame having two side members, means for holding them in spaced parallel relation, a blade secured to the inner edge of eaohside member, the blades being downwardly and inwardly inclined, the planes of the blades intersecting eachother in a line parallel withthe side members, the lowermost point of the cutting edge of each blade vbeing below the plane of the other blade whereby intersecting cuts are formed, a guide bar attached to the frame, and a cutting blade attached to the guide bar, said last named blade lying in a plane parallel with the under surface of the frame.

6. A tool for the purpose described, comprising, a frame having two side members, means for holding them in spaced parallel relation, a blade secured to the inneredge of each side member, the blades being downwardly and inwardly inclined, the planes of the blades intersecting each other in a line parallel with the side members, the lowermost point of the cutting edge of each blade being below the plane of the other blade icc, v

ably interconnecting :the ends Vof the guide bar Withitlieendsoz the lframe.

7. A teol for thepurpose described comprising, a frame having an elongated opening therein, means carried by the frame and located vin Athe opening for: cutting Va groove when thetool is moved inthe direction of its length, two bars secured .to the tool and eX- tending laterally. therefrom, a guide bar slidably connectedwith the `bars and a second guide bar securedto the first guide bar and adapted to extend underneath the frame.

8. .Aitool for, the purpose described comprising-,airtime havingan elongated opening therein, nieans carried by the frame vand lecatedfingt 1e opening lfor cutting a groove When'tlietoclis -rnoved in the direction of its length, two barslsecnred tothe tool and'eX- y tending laterally therefrom, a guide bar 2O slidably connected With the bars, a second guide bargsecured to the vfirst guide bar and adapted to extend underneath the frame and means for slidably connecting the ends of the last named guide bar With the ends of the frame.

9. A tool orthe purpose described coniprising, afranie having` an elongatedopening therein, means carried by the frame and located intheopeningfor cutting a groove jwhenthe tool is moved lin the direction of its Y lengt-li, tWo bars secured totheftool and exten ding, laterally therefrom, aY guide-bar slidably connected with the bars, a second guide bar secured to the first guidebar and adapted to extend underneath the frame, means for slidably connecting thev ends of last named guide bar with the ends of the frame and a cutter associated With the last inamed guide bar, said cutter lyingin a plane parallelto A0" lthe plane ofthe under surface of the tool.r

, In testiinonywvhereof I affix my signature.

CHARLES A. CHAPMAN. 

